256 



1856. Venus siibnodulosa Hanley, Rec. Biv. Shells, Appendix, p. 360, pi. XVI, fig. 19. 



1857. Chione [Timoclea] subnodulosa Adams, H. & A., Gen. Rec. MolL, II, p. 422. 

 1863. Venus subnodulosa Reeve, Conch. Icon., XIV, Venus, pi. XXI, fig. 102. 



1867. Venus {Chione-Omplialoclathrum) subnodulosa Rômer, Malakozool. Blàtt., XIV, p. 61. 



1884. Venus subnodulosa Grasset, Ind. Test. Viv., p. 263. 



1884. Venus subnodulosa Smith, Rept. Voy. "Alert", p. 94. 



1890. Chione [Otiiphaloclathruvi) subnodulosa Paetel, Cat. Conch. Samm., III, p. 88. 



1899. Chione [Ouiphaloclathrum) .y;^<^«(9^///^j'a Melvill & Standen, Journ. Linn. Soc. London (ZooL), 



XXVII, p. 196. 

 1903. Chione subnodulosa Hidalgo, Obras Malacol., II, p. 299. 



1905. Chione subnodulosa Hidalgo, Cat. Filip., p. 339. 



1906. Chione subnodulosa Hedley, Proc. Linn. Soc. N. S. Wales, XXXI, p. 466. 



1909. Chione (Ouiphaloclathrum) subnodulosa Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Math.- 



Nat., (7) V, p. 243, pi. V, fig. 5. 



19 10. Chione subnodulosa Hedley, Austral. Ass. Adv. Soi., XII, p. 349. 



191 1. Venus subnodulosa Pelseneer, "Siboga" Lamellibranches (Anat.), p. 52. 



1928. Venus (Chione) subnodulosa Faustino, Summary Philippine Mar. Freshw. MoU., p. 72. 



The "Siboga" shells, which I refer to C. (T.) si(ânodzi /os a (Hanley) agrée with the spécimens 

 of the species in the British Muséum (Nat. Hist.), London, from Moreton Bay and Oueensland. 

 The concentric lamellae in one of the shells near the anterior margin, however, are very wavy 

 and run into one another. 



Distribution: — C. {7\) stLÔnodulosa has been recorded from Singapore, Gulf of Siam, 

 Philippine Islands, Torres Straits and off Queensland. 



In the "Siboga" collection the species is represented by one adult and three young shells 

 collected at the Anchorage off Pulu Jedan, east coast of Aru Islands (St. 273). 



6. Chione {Timoclea) costellifera (Adams & Reeve). 



1848. Venus costellifera Adams & Reeve, "Samarang" Moll., p. 79, pi. XXI, fig. 18. 



1853. Venus costellifera Sowerby, Thés. Conch., II, p. 718, pi. CL VII, fig. 106. 



1853. Venus costellifera Deshayes, Cat. Conch. Brit. Mus., I, Veneridae etc., p. 130. 



1857. Chione costellifera Adams, H. & A., Gen. Rec. MoU., II, p. 421. 



1860. Venus costellifera Reeve, Elem. Conch., II, p. iio. 



1863. Venus costellifera Reeve, Conch. Icon., XIV, Venus, pi. XXII, fig. 103. 



1867. Venus (Chione-Oinplialoclatliruin) costellifera Rômer, Malakozool. Blàtt., XIV, p. 56. 



1870. Chione costellifera Mac Andrew, Ann. Mag. Nat. Hist., (4) VI, p. 446. 



1884. Venus costellifera Grasset, Ind. Test. Viv., p. 261. 



1886. Chione costellifera Cooke, Ann. Mag. Nat. Hist., (5) XVIII, p. 102. 



1890. Chione (Omphaloclathrum) costellifera Paetel, Cat. Conch. Samm., III, p. 85. 



1896. Chione costellifera Casto de Elera. Cat. Sist. Filip., 755. 



1899. Chione (Omphaloclathrum) costellifera Melvill & Standen, Journ. Linn. Soc. London (Zool.j, 



XXVII, p. 195. 



1900. Chione costellifera Newton, Geol. Mag., VII, p. 554. 

 1903. Chione costellifera Hidalgo, Obras Malacol., II, p. 302. 



1905. Chione costellifera Hidalgo, Cat. Filip., p. 339. 



1906. Chione costellifera Melvill & Standen, Proc. Zool. Soc. London, p. 834. 

 1910. Chione costellifera Hedley, Austral. Ass. Adv. Sci., XII, p. 349. 



1928. Venus (Chione) costellifera Faustino, Summary Philippine Mar. Freshw. Moll., p. 71. 



The very regular closely placed radial ribs of C. (T.) costellifera are not so raised as 

 the concentric ridges. At their points of intersection the radial and the concentric ridges are 

 somewhat thickened and give the shell almost a beaded appearance. 



